diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7e96d4b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+node_modules/
+src/**/*.js
+src/**/*.js.map
+!src/**/systemjs*.js
\ No newline at end of file
diff --git a/node_modules/.gitignore b/node_modules/.gitignore
deleted file mode 100644
index 6b8fdaf..0000000
--- a/node_modules/.gitignore
+++ /dev/null
@@ -1,3 +0,0 @@
-node_modules/
-src/**/*.js
-src/**/*.js.map
\ No newline at end of file